Bowels control brain: gut hormones and obesity     

Gavin A. Bewick 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2012,22(3):283-297

Peptide hormones are released from the gastrointestinal tract in response to nutrients and communicate information regarding the current state of energy balance to the brain. These hormones regulate appetite, energy expenditure and glucose homeostasis. They can act either via the circulation at target peripheral tissues, by activation of the vagus nerve or by acting on key brain regions implicated in energy homeostasis such as the hypothalamus and brainstem. This review gives an overview of the main gut hormones implicated in the regulation of food intake and how some of these are being targeted to develop anti obesity treatments.  相似文献   

8周跑台运动对肥胖大鼠下丘脑ghrelin和obestatin的影响     

汪军  田吉明 《北京体育大学学报》2009,(4)

目的:8周跑台运动对肥胖大鼠摄食以及血浆和下丘脑相关摄食内分泌指标的影响,初步探讨运动减肥的神经内分泌机制。方法:10周营养性肥胖建模SD大鼠分为对照组(LC)和运动组(LE)。大鼠专用跑台,坡度5%,速度20 m/min,运动时间40 min,进行8周运动后取材。每天观察LC组和LE组大鼠摄食量和体重;测试8周运动后肥胖大鼠血糖等基础指标;放射免疫方法测试血浆和下丘脑ghrelin和obestatin蛋白表达;RT-PCR方法测试下丘脑ghrelin受体GHSR-1a、obestatin假定受体GPR-39基因表达。结果:8周跑台运动后,两组大鼠体重都有增加,只是LE组增加的幅度较小;LE组大鼠摄食量显著下降,血糖等基础指标变化不明显;LE组大鼠血浆ghrelin和obestatin没有影响;下丘脑ghrelin和obestatin显著下降;GHSR-1a基因表达没有影响,而没有发现GPR-39基因表达。结论:Ghrelin可能通过中枢机制影响摄食和能量代谢调节;Obestatin-GPR39通路在能量代谢调节中可能不起作用。  相似文献